Apparatus for freeing water from its contained iron in a continuous circuit.



L DARAPSKYT APPARATUS FOR. FREEING WATER- FROM I'm CONTAINED IRON IN A CONTINUOUS CIRCUIT.

APPLIOATION FILED JUNES,19O9v wafifige Patented Oct. l8, 1910.

Witnesses. Invent-0r.

e -aaia LUDWIG HEINRICH DABAPSKY,"OF HAMBURG, GERMANY, ASSIGNOR TO THE FIRM OF DESENISS 8a JAGOIBI AKTIENGESELLSCHAFT, 0F HAMBURG; GERMANY.

APPARATUS FOR FREEINGV'WATER FROM ITS CQNTAINED TRON IN A CONTINUOUS GIRCUIT. 4

erases.

Patented Got. 18, 1910.

Application filed June 9, 1909. Serial No. 501,182.

This invention relates to apparatus for freeing water from "the lIOIl it contains.

In carrying out the process of freeing water from the llOIl it contains, by passing the water with an excess of air in a continu ous circuit through a filter in which the ocher formed by the oxidation of the dissolved iron is precipitated. it has been observed that in most cases the introduction .of a large amount of air has a favorable effect upon the efliciency of the process. It is. therefore advisable not to limit unduly the amount of the air.

The introduction of the air under pres sure require-s however an expenditure of power that is proportional to the amount of the air thus forced into the circuit. A

Now the present invention has for its object to provide an improved apparatus by the use of which this expenditure of power is avoided. In the improved apparatus instead of allowing the air to escape from the filter .into the atmosphere the water with the air is passed into an air separator in -which the air that is in a state oil mechaniiron, or to the greater solubility of oxygen bubbles.

The decrease of the contents of the continuous circuit is indicated by the variation of the water level. By far the greater quantity of the air remains however permanently in circulation Within the continuous circuit.

One form of apparatus embodying the present improvements is illustrated in vertical section in the accompanying diagrammatic drawing in which A is the filter and'B is the air separator. The water which it is desired to free from the iron it contains, is forced by a water pump through the pipe a into the filter where it meets the air forced in through the pipe 6. The mixture of water and air passes through the pipe Z) into the air separator B whence the water freed from air and iron is delivered through the pipe 0 continuously to the place of consumption.

i The delivery of purified water is always under the pressure of the water-pump. The

air separated from the purified water is sucked up by the air pump 03 and forced back into thefilter; If desired the Water pump may be placed at the outlet or deirvery end of the entire apparatus instead of at the entrance or. inlet end, in other words the apparatus maybe included in the suction pipe of the water pump, without departing from the nature of the present invention.

Apart from the decrease of volume due to absorption of the oxygen by the iron and as above referred to, the air pump interposed between the water and air separator and the filter has only to overcome the difference of pressure between the upper and lower ends of the filter, and the power consumed by the pump i independent therefore of the water pressure. This diii'erence amounts to only two or three meters of water column, while the. total pressure in the filter may amountto several atmospheres, according to the height at which the purified water is delivered. This modified arrangement has special advantages in some cases.

I claim:

1. In an a closed filter, a. closed separator for air and water separate from the filter and into which the filter discharges, means to pump lot I apparatus for purifying water,

I close filler e'elesel charges,

711 an epperalus for removing iron free W M u issed ll tee, closedseperebel l en en. \vaiez: at lee-er level than the filter and inie which lhe filter (lismeans to supply water lathe filter and a pump 0 deliver the separated air fremlthe separator w the filter s'imulzbaneoasl with the Water supplied he said lilier. v

In an apparatus 01 purifying Water, ee rater fer eh l hich the 1, discharges, te the and I filter and a pump to pump the airfrom hhe separator to the filter slmultaneously with 'lhe Water under pressure.

l. The combination with a service Water main, of a closed filter into which said main discharges, & closed separator into which the filler discharges, a pump to pump the eh separated from the filtered water in the separator w the irllet of the filter, and a eentmuatlon of the service Water main extending item the separator.

' LUDWIG HEINRICH DAEAPSKY.

Witnesses MAX A. G. LEMQKE, ERNEST H. L. MUMMENHOFF 

